METAL MATERIAL HAVING n-TYPE THERMOELECTRIC CONVERSION CAPABILITY

Abstract

The present invention provides a metal material comprising an alloy that is represented by the compositional formula Mn3-xM1xSiyAlzM2a, wherein M1 is at least one element selected from the group consisting of Ti, V, Cr, We, Co, Ni, and Cu; M2 is at least one element selected from the group consisting of B, P, Ga, Ge, Sn, and Bi, where 0≦x≦3.0, 3.5≦y≦4.5, 2.5≦z≦3.5, and 0≦a≦1, the alloy having a negative Seebeck coefficient and an electrical resistivity of 1 mΩ·cm or less at a temperature of 25° C. or higher. The metal material of the present invention is a novel material that has good thermoelectric conversion capability in the intermediate temperature region and excellent durability, and that is useful as an n-type thermoelectric conversion material.

Dependencies are inferred from the claim text.